JPH07229165A - Side deck of rotating body of construction machine - Google Patents

Abstract

PURPOSE:To ensure the strength of a side frame with a low working cost, and simplify the attaching/detaching and assembling operations by mounting the opening side of a frame member on the side end part of a deck beam in such a manner as to be attachable and detachable by fastening a bolt. CONSTITUTION:A frame member 10 is formed toward the longitudinal direction of a rotating frame, and the upper and lower side plate parts on the opening side are mounted on the upper surface part and lower surface part of the side end parts of deck beams 8, 9, respectively. In this case, the fastening of a bolt 13 is easily performed from the upper and lower sides of the deck beam 8, 9 side end parts, and the frame member 10 can be formed into a U-shaped sectional form. A rigid synthetic resin material is used as the material of the frame member 10, and the weight is reduced to facilitate the mounting work or attaching/detaching operation. Further, in a one having a side plate 14 welded to the side end surface parts of the deck beams 8, 9 to mount the frame 10, the strength of the side deck is enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a structure of a side deck which constitutes a revolving structure for construction machines such as hydraulic excavators and work vehicles.

[0002]

2. Description of the Related Art FIG. 6 is a plan view of a swivel base 1 having a side frame mounting structure described in Japanese Utility Model Publication No. 4-53335. FIG. 7 is a sectional view taken along the line AA of FIG. In the swivel base 1 shown in FIGS. 6 and 7, the side frame 2 is attached to the side end portion of the deck beam 4 by bolts 5 via the bracket 3 fixed to the side portion.

[0003]

In the structure of the side frame mounting portion of the prior art shown in FIGS. 6 and 7, since the side frame is mounted via a plurality of brackets, the structure is complicated. Moreover, it is difficult to align the position of the bolt tightening surface due to manufacturing error.
The processing cost is also high. Further, since the side ends of the plurality of deck beams are fixed by the side frames, the strength of the side ends of each deck beam cannot be said to be sufficient. Also, since the bolts are tightened inside the side frame, it is difficult to attach and detach the side frame. An object of the present invention is to provide a side deck that can solve the above problems.

[0004]

According to the side deck of the present invention, the cross-sectional shape of the side deck is such that the frame member is attached to the side end portion of the deck beam extending laterally from the center frame of the revolving structure. Is substantially U-shaped, and a long frame member is formed in the front-rear direction of the revolving structure, and the opening side of the frame member having a substantially U-shaped cross section is detachably attached to the side end of the deck beam. . A metal material such as a steel plate or a non-metal material such as a hard synthetic resin material is used as the material of the frame member. Further, side plates are fixedly mounted over the end surface portions of the plurality of deck beams extending laterally of the center frame, and the frame member is attached to the side end portions of the deck beams. Further, the upper side plate portion and the lower side plate portion on the opening side of the frame member are respectively bolted to the upper surface portion and the lower surface portion of the side end portion of the deck beam.

[0005]

In the side deck of the present invention, a frame member having a substantially U-shaped cross section is formed in the longitudinal direction of the revolving structure, and an upper plate portion of the frame member on the opening side having a substantially U-shaped cross section. The lower plate portion and the lower plate portion are respectively bolted to the upper surface portion and the lower surface portion of the side end portion of the deck beam.
This eliminates the need for a bracket or the like for connecting the frame member and the deck beam lateral end, and allows bolts to be easily tightened from above and below the deck beam lateral end. Further, when the material of the frame member is a metal material such as a steel plate, the frame member can be formed into a U-shaped or U-shaped cross-section by press molding or the like. Moreover, the frame member made of hard synthetic resin material such as dicyclopentadiene resin, urethane resin, nylon resin, polypropylene resin, polyethylene resin, etc., is light in weight, so it is easy to install at the factory or on site. Moreover, the detaching operation can be performed by one operator. Also, in the case where the side plate is fixedly installed over the end faces of the plurality of deck beams extending laterally of the center frame, and the frame member is attached to the side ends of the deck beams, a plurality of deck beams The side ends are connected by the side plates, and the strength of the side deck can be increased by attaching the frame member.

[0006]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a swing structure of a hydraulic excavator (not shown) having a side deck of the present invention (a general structure of the swing structure is not shown, but it is a so-called upper swing structure of the hydraulic excavator). It is a principal part top view which shows the left half of the frame 6. In the figure, 7 is a center frame which constitutes the central part of the revolving frame 6. It should be noted that side decks having slightly different shapes and sizes are provided asymmetrically on both the left and right sides of the center frame 7, but because of the structurally similar structure, the left side deck is representative. This will be described as an example. In FIG.
Reference numerals 8 and 9 denote a plurality of deck beams extending laterally from the center frame 7, 10 denotes a frame member, 11 and 12 denote bolt tightening portions of the frame member 10 formed on the frame member 10, and 13 denotes a bolt. FIG. 2 is a perspective view of an essential part showing the side deck in FIG. In the figure, 14
Is a side plate welded over the side end surfaces of the deck beams 8 and 9. FIG. 3 is a view seen from B of FIG. In the figure, 15 and 16 are frame members 10.
The upper side plate portion and the lower side plate portion 17 and 18 on the opening side of are the screw holes for the bolts 13 and 13 respectively formed on the upper surface side and the lower surface side of the deck beam 9 (same for the deck beam 8). FIG. 4 is a diagram showing an assembled configuration of the side deck in FIG. In the figure, 19 and 20 are bolt holes for the bolts 13 and 13 formed in the upper plate portion 15 and the lower plate portion 16 of the frame member 10, respectively, and 21 is a washer.

Next, the structure of the side deck of the present invention is shown in FIG.
~ Referring to FIG. According to the present invention, the cross-sectional shape of the deck beams 8 and 9 extending laterally from the center frame 7 forming the center of the swing frame 6 (shown in FIG. 1) of the swing structure for a hydraulic excavator is substantially the same. A long frame member 10 having a U-shape and extending in the front-rear direction of the revolving frame 6 was formed, and an opening side of the frame member 10 having a substantially U-shaped cross section was detachably attached with a bolt 13. As the material of the frame member 10, a metal material such as a steel plate or a non-metal material such as hard dicyclopentadiene resin, urethane resin, nylon resin, polypropylene resin or polyethylene resin is used. Further, the side plate 14 is welded over the side end surface portions of the plurality of deck beams 8 and 9, and the frame member 10 is attached to the side end portions of the deck beams 8 and 9. In that case, the upper side plate portion 15 (shown in FIGS. 3 and 4) and the lower side plate portion 16 on the opening side of the frame member 10 are attached to the upper surface portion and the lower surface portion of the side ends of the deck beams 8 and 9, respectively. Each of them was attached by tightening bolts 13.

Next, the operation of the side deck of the present invention will be described. According to the present invention, a frame member 10 having a substantially U-shaped cross section and extending in the front-rear direction of the revolving frame 6 is formed. Attach the side plate 16 to the deck beams 8 and 9
Bolts 1 to the top and bottom of the side edge of the
It was attached by tightening. Accordingly, a bracket or the like for connecting the frame member 10 and the side ends of the deck beams 8 and 9 is unnecessary, and the bolt 13
The tightening can be easily performed from the upper side and the lower side of the side ends of the deck beams 8 and 9. Further, when the material of the frame member 10 is a metal material such as a steel plate, the cross-sectional shape of the frame member 10 can be formed into a U shape or a U shape by press molding or the like. Since the frame member 10 made of a hard synthetic resin material is light in weight, the frame member 10 can be easily installed in a factory or on-site, and the detaching operation can be performed by one operator. Further, the side plate 14 is welded over the side end surfaces of the plurality of deck beams 8 and 9,
In the case where the frame member 10 is attached to the side end portion of 9, the side ends of the plurality of deck beams 8 and 9 are connected by the side plate 14, and
By mounting the frame member 10, the strength of the side deck can be increased.

Next, FIG. 5 is a perspective view showing a main portion of a side deck according to another embodiment of the present invention. In FIG. 5, parts that use the same components as in FIG. 2 are assigned the same reference numerals. Figure 5
In another embodiment of the side deck, the frame member 1
In order to increase the strength of 0 ', the inner edge a of the upper plate 15' is formed in a straight line in the front-rear direction. In the embodiments of the present invention and other embodiments, the bolt 1 is used for convenience of explanation.
The set number of 3 is shown in the minimum limit.

[0010]

In the side deck of the embodiment of the swing body of the prior art, the side frame is attached to the deck beam through a plurality of brackets, so that the structure is complicated and there is no manufacturing error. Therefore, it is difficult to align the positions of the bolt tightening surfaces, and the processing cost is high. Further, since the side ends of the plurality of deck beams are fixed by the side frames, the strength of the side ends of each deck beam cannot be said to be sufficient. Also, since the bolts are tightened inside the side frame, it is difficult to attach and detach the side frame. However, in the side deck of the present invention, a frame member having a substantially U-shaped cross section is formed in the longitudinal direction of the revolving structure, and the frame member has a substantially U-shaped cross section and an upper side plate portion on the opening side and a lower side. The side plate portion is bolted to the upper surface portion and the lower surface portion of the side end portion of the deck beam, respectively. This eliminates the need for a bracket or the like for connecting the frame member and the deck beam lateral end, and allows bolts to be easily tightened from above and below the deck beam lateral end. Further, when the material of the frame member is a metal material such as a steel plate, the frame member can be formed into a U-shaped or U-shaped cross-section by press molding or the like. In addition, since the frame member made of a hard synthetic resin material is light in weight, the frame member can be easily installed in the factory or on site, and the detaching operation can be performed by one operator. Also, in the case where the side plate is fixedly installed over the end faces of the plurality of deck beams extending laterally of the center frame, and the frame member is attached to the side ends of the deck beams, a plurality of deck beams The side ends are connected by the side plates, and the strength of the side deck can be increased by attaching the frame member. Therefore, the side deck of the present invention can sufficiently exert the effect of revolving structure protection, and when the frame member is deformed or damaged by colliding with other obstacles, etc., it can be easily replaced by one person in a short time. It can be performed.

[Brief description of drawings]

FIG. 1 is a plan view of relevant parts showing a left half of a revolving frame of a revolving structure including a side deck of the present invention.

FIG. 2 is a perspective view of a main part showing a side deck in FIG.

FIG. 3 is a view seen from B of FIG.

FIG. 4 is a diagram showing an assembly configuration of a side deck in FIG.

FIG. 5 is a perspective view of a main part showing a side deck according to another embodiment of the present invention.

FIG. 6 is a plan view of a swivel in which a conventional side frame mounting portion structure is implemented.

7 is a sectional view taken along the line AA of FIG.

[Explanation of symbols]

 2 Side frame 3 Bracket 4,8,9 Deck beam 5,13 Bolt 6 Swing frame 7 Center frame 10,10 'Frame member 11,12 Bolt tightening part 14 Side plate 15,15' Upper plate part 16 Lower plate part

Claims (7)

[Claims] 1. A side deck in which a frame member is attached to a lateral end portion of a deck beam extending laterally from a center frame of a revolving structure, and a cross-sectional shape thereof is substantially U-shaped and a front-rear direction of the revolving structure. A side deck of a revolving structure for a construction machine, characterized in that a long frame member is formed toward the front side, and an opening side of the frame member having a substantially U-shaped cross section is attached to a side end portion of a deck beam. 2. The side deck of the revolving structure for a construction machine according to claim 1, wherein a frame member is detachably attached to a side end portion of the deck beam. Revolving side deck. 3. The side deck of the revolving structure for a construction machine according to claim 1, wherein the material of the frame member is a metal material. 4. The side deck of a revolving structure for a construction machine according to claim 1, wherein the material of the frame member is a hard non-metallic material. 5. The side deck of a revolving structure for a construction machine according to claim 4, wherein the material of the frame member is a hard synthetic resin material. 6. The side deck of a revolving structure for a construction machine according to claim 1, wherein a side plate is fixedly provided over end faces of a plurality of deck beams extending laterally of the center frame, A side deck for a revolving structure of a construction machine, characterized in that a frame member is attached to a side end portion of a beam. 7. The side deck of a revolving structure for a construction machine according to claim 1, wherein the upper side plate and the lower side plate on the opening side of the frame member are the upper side and the lower side of the deck beam side end. A side deck of a revolving structure of a construction machine, characterized by being bolted to each part.